Retention Strength after Compressive Cyclic Loading of Five Luting Agents Used in Implant-Supported Prostheses

Álvarez-Arenal, Ángel; González-González, Ignacio; deLlanos-Lanchares, Héctor; Brizuela-Velasco, Aritza; Pinés-Hueso, Javier; Ellakuria-Echebarria, Joseba

doi:10.1155/2016/2107027

Cited by 4 publications

(5 citation statements)

References 22 publications

(40 reference statements)

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“…Studies have shown that compressive cycling loading significantly reduces the dislodging force after cementation is complete. 31 32 However, this study proceeded only for thermal cycling between cold and hot baths after cementation, and the role of cycling loading to the cemented crowns could not be evaluated. Furthermore, if a compressive cyclic loading test was to be performed for this research, the rounded or curved upper part of the crown could have been an obstacle to receive an evenly distributed compressive force.…”

Section: Discussionmentioning

confidence: 99%

Effect of hemispherical dimples at titanium implant abutments for the retention of cemented crowns

et al. 2023

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PURPOSE The aim of this study was to assess the effect of hemispherical dimple structures on the retention of cobalt–chromium (Co–Cr) crowns cemented to titanium abutments, with different heights and numbers of dimples on the axial walls. MATERIALS AND METHODS 3.0-mm and 6.0-mm abutments (N = 180) and Co-Cr crowns were prepared. The experimental groups were divided into two and four dimple groups. The crowns were cemented by TempBond and PANAVIA F 2.0 cements. The retention forces were measured after thermal treatments. A two-way Analysis of Variance (ANOVA) and post-hoc Tukey HSD test were conducted to analyze change in retention forces by use of dimples between groups, as well as t test for the effect of abutment height change (α = .05). RESULTS Results of the two-way ANOVA showed a statistically significant difference in retention force due to the use of dimples, regardless of the types of cements used ( P < .001). A significantly higher mean retention forces were observed in the groups with dimples than in the control group, using the post hoc Tukey HSD test ( P < .001). Results of t test displayed a statistically significant increase in the retention force with 6.0-mm abutments compared with 3.0-mm abutments ( P < .001). The groups without dimples revealed adhesive failure of cements, while the groups with dimples showed mixed failure of cements. CONCLUSION Use of hemispherical dimples was effective for increasing retention forces of cemented crowns.

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Section: Discussionmentioning

confidence: 99%

Effect of hemispherical dimples at titanium implant abutments for the retention of cemented crowns

et al. 2023

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“…34 The adopted thermo cycling protocol in this study simulated 2.5 years of clinical service, 29 while the cyclic loading protocol simulated 2-3 months of clinical service. 31 Also, water has been suggested to play a role in the propagation of small cracks. Thus, we used deionized water instead of artificial saliva, since it has no significant effect on the coefficient of friction between natural teeth.…”

Section: Discussionmentioning

confidence: 99%

“…Using deionized water, 100,000 cycles were applied with a load of 100 N and a frequency of 1 Hz, corresponding to 2-3 months of clinical service. 30,31…”

Section: Simulation Of Oral Conditionsmentioning

confidence: 99%

Effect of the CAD-CAM and lost-wax framework fabrication techniques on the fracture strength of porcelain in metal-ceramic restorations

Tajziehchi,

Ansari,

Afshar

2023

Dent. Med. Probl.

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Background. Ceramic fracture is a common problem in metal-ceramic restorations (MCRs). The advent of computer-aided design and computer-aided manufacturing (CAD-CAM) technology eliminated the lost-wax technique, which was responsible for many of the problems associated with framework fabrication. However, the role of the CAD-CAM technology in decreasing porcelain fracture is not yet known.Objectives. The aim of the present in vitro study was to compare the fracture strength of porcelain in MCRs with metal frameworks fabricated with the use of the lost-wax and CAD-CAM techniques.Material and methods. Twenty metal dies were prepared with a deep chamfer finish line, with a depth of 1.2 mm and the occlusal taper of the walls of 8°, a 2-millimeter occlusal reduction of the functional cusp, a 1.5-millimeter occlusal reduction of the nonfunctional cusp, and the functional cusp bevel. Ten frameworks were fabricated using the CAD-CAM system and 10 with the lost-wax technique. After porcelain veneering, the specimens underwent thermocycling and cyclic loading to simulate the aging process. The load test was then performed. The fracture strength of porcelain was compared between the 2 groups, and the mode of failure was also determined using a stereomicroscope.Results. Two specimens were excluded from the CAD-CAM group. Thus, 18 specimens were statistically analyzed. The results revealed no significant difference in fracture strength between the 2 groups (p > 0.05). The mode of failure was mixed in all specimens from both groups. Conclusions.Our results indicated that the fracture strength of porcelain and the mode of failure did not depend on the metal framework fabrication technique (lost-wax or CAD-CAM).

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“…Implant-abutment connection and retention type (cemented or screw retained) are critical factors for the long-term success of ISFP (Implant supported fixed prosthesis) (1). Despite the disadvantages of cement-retained restorations such as peri-implantitis, peri-implant mucositis, and difficulties in removing for future maintenance, cemented ORIGINAL ARTICLE / ÖZGÜN ARAŞTIRMA restorations are still commonly used in clinical practice due to less mechanical complication, easy production, esthetics, and lower costs (2,3).…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, the retention of restorations depends on type of cement, axio-occlusal angle, composition of crown material and texture, abutment height and firstly frictional retention (3). In clinical practice, cement-retained restorations should exhibit easy retrievability and adequate retention strength to avoid decementation (1). Zinc phosphate, zinc polycarboxylate, glass-ionomer, and self-cure resin cements have been commonly selected for the permanent cementation of ISFP (12).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Fabrication Technique and Cement Type on the Retention Strength of Implant Supported Crowns

Mutlu¹,

Zortuk²,

Öztürk³

et al. 2021

ERD

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Objectives:The purpose of this study was to compare the retention strength of implant-supported frameworks produced by CAD/CAM, direct metal laser sintering, the traditional lost-wax technique by using three different luting cement.Materials and Methods: Ninety standard titanium abutments screwed to analogs then mounted in acrylic resin. Samples were divided into three main groups according to the manufacturing technique (N=30). Then groups were divided into three subgroups based on the cement type used (n=10). Specimens were subjected to the pull-out test by using a universal testing machine at a 1 mm/ min crosshead speed. The highest pull-out strength values were recorded in Newton. Statistical analysis of the data was performed using two-way analysis of variance and post hoc Tukey multiple comparison test at a significance level of 0.05.Results: The two-way analysis of variance revealed that the fabrication technique and cement type had a significant effect on pull-out strength (p<0.05). However, the interaction of fabrication technique and cement type did not significantly affect the pullout strength of groups (p>0.05). The highest pull-out strength was found in the laser sintering group, while the conventional lostwax technique had the lowest values. Within the subgroups, selfadhesive resin cement had the highest pull-out strength, traditional cement subgroup had the lowest.Conclusions: Fabrication technique and cement type have a statistically significant effect on the retention of the implantsupported crowns.

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Retention Strength after Compressive Cyclic Loading of Five Luting Agents Used in Implant-Supported Prostheses

Cited by 4 publications

References 22 publications

Effect of hemispherical dimples at titanium implant abutments for the retention of cemented crowns

Effect of hemispherical dimples at titanium implant abutments for the retention of cemented crowns

Effect of the CAD-CAM and lost-wax framework fabrication techniques on the fracture strength of porcelain in metal-ceramic restorations

The Effect of Fabrication Technique and Cement Type on the Retention Strength of Implant Supported Crowns

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